Strontium — a group linked to Russian military intelligence — was using the domains to target Ukrainian institutions, Microsoft said.

Polish, Ukrainian and European targets are facing a barrage of cyber operations, researchers say.

Nation-state hackers might not want to get on China's bad side, but athletes, officials, volunteers and fans should watch their phones.

The group shares some similarities with Fancy Bear, but is a separate organization, Trend Micro found.

The targets of Fancy Bear's brute force attacks include both government agencies and the private sector, the advisory alleges.

Why waste a prized hacking tool when email will do just fine?

Norway's allegation against Fancy Bear follows Germany's blaming of the group for a 2015 hack on that country's parliament.

Three groups targeted seven prominent companies in Canada, France, India, South Korea and the United States, Microsoft said.

It's just the second time the EU has used its cyber sanctions powers.

“I have no reason to believe that they’ll be quiet between now and Nov. 3,” Microsoft’s Tom Burt said of Fancy Bear.